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Omicron 133047 Borosilicate Glass Fiber Binder Free Filter, 1.2 μm, 47 mm (Pack of 100): Amazon.com: Industrial & Scientific
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Frontiers | Filtration via Conventional Glass Fiber Filters in 15N2 Tracer Assays Fails to Capture All Nitrogen-Fixing Prokaryotes
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Grade 934-AH® Cut Glass fiber filter, Diameter 47 mm, Prewashed Preweighed for Standard Methods TSS or VSS Procedure, 100/Pack | Southern Labware
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